Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/930321
- Entropy analysis of the dynamics of El Niño/Southern Oscillation during the Holocene
Saco, Patricia M.;
Carpi, Laura C.;
Rosso, Osvaldo A.
- The University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering
- This study explores temporal changes in the dynamics of the Holocene ENSO proxy record of the Laguna Pallcacocha sedimentary data using two entropy quantifiers. In particular, we analyze the possible connections between changes in entropy and epochs of rapid climate change (RCC). Our results indicate that the dynamics of the ENSO proxy record during the RCC interval 9000–8000 BP displays very low entropy (high predictability) that is remarkably different from that of the other RCCs of the Holocene. Both entropy quantifiers point out to the existence of cycles with a period close to 2000 years during the mid-to-late Holocene. Within these cycles, we find a tendency for entropy to increase (predictability to decrease) during the two longer RCC periods (6000–5000 and 3500–2500 BP) which might be associated with the reported increased aridity of the low tropics.
- Physica A: Statistical Mechanics and Its Applications Vol. 389, Issue 21, p. 5022-5027
- Publisher Link
time series analysis;
- Resource Type
- journal article